datum omzetten werkt niet

<?php
		$maanden = array();
			$maanden[01] = "Januari"; 
			$maanden[02] = "Februari";
			$maanden[03] = "Maart"; 
			$maanden[04] = "April";
			$maanden[05] = "Mei"; 
			$maanden[06] = "Juni";
			$maanden[07] = "Juli"; 
			$maanden[08] = "Augustus";
			$maanden[09] = "September"; 
			$maanden[10] = "Oktober";
			$maanden[11] = "November"; 
			$maanden[12] = "December";
		
		$datum = date("d-m-Y H:i", $array['last_login'.$lastlogin.'']);
		$explode1 = explode(" ", $datum);
		$explode2 = explode("-", $explode1[0]);
		echo $explode2[0]." ".$maanden[$explode2[1]]." ".$explode2[2]." ".$explode1[1];

<?php
		$maanden = array();
			$maanden[01] = "Januari"; 
			$maanden[02] = "Februari";
			$maanden[03] = "Maart"; 
			$maanden[04] = "April";
			$maanden[05] = "Mei"; 
			$maanden[06] = "Juni";
			$maanden[07] = "Juli"; 
			$maanden[08] = "Augustus";
			$maanden[09] = "September"; 
			$maanden[10] = "Oktober";
			$maanden[11] = "November"; 
			$maanden[12] = "December";
 
		$datum = date("d-m-Y H:i", $array['last_login'.$lastlogin.'']);
		$explode1 = explode(" ", $datum);
		$explode2 = explode("-", $explode1[0]);
		echo $explode2[0]." ".$maanden[$explode2[1]]." ".$explode2[2]." ".$explode1[1];